Bump sphinxcontrib-htmlhelp from 2.0.5 to 2.0.6 (#11306)

Bumps [sphinxcontrib-htmlhelp](https://github.com/sphinx-doc/sphinxcontrib-htmlhelp) from 2.0.5 to 2.0.6.
- [Release notes](https://github.com/sphinx-doc/sphinxcontrib-htmlhelp/releases)
- [Changelog](https://github.com/sphinx-doc/sphinxcontrib-htmlhelp/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinxcontrib-htmlhelp@2.0.5...2.0.6)

---
updated-dependencies:
- dependency-name: sphinxcontrib-htmlhelp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

ci-constraints-requirements.txt

@@ -126,7 +126,7 @@ sphinxcontrib-applehelp==1.0.8
     # via sphinx
 sphinxcontrib-devhelp==1.0.6
     # via sphinx
-sphinxcontrib-htmlhelp==2.0.5
+sphinxcontrib-htmlhelp==2.0.6
     # via sphinx
 sphinxcontrib-jquery==4.1
     # via sphinx-rtd-theme